Regulation of liquid-fuel burners.



PATENTED JULY 1'7, 1906.

T. GLARKSON.

REGULATION OI LIQUID FUEL BURNBRS.

APPLICATION FILED AUG. 22, 1904.

2 SHEETS-SHEET l.

HZ, T O @QQ N PATENTED JULY-17, 1906.

T. CLARK'SON.

REGULATION OF LIQUID FUEL BURNERS.

APPLIOATIOE FILED AUG. 22, 1904.

A. Q. I

2 SHEETS-SHEET z.

THOMAS CLARKSON, OF OHELMSFORD, ENGLAND.

REGULATION OF LIQUID FUEL BURNERS- Specification of Letters Patent.

Patented. July 1'7, 1906.

Application filed August 22,1904. Serial No. 221,776.

To all whom it may concern.-

Be it known that I, THOMAS OLARKsoN, a subject of the King of England,residing at Chelmsford, England, have invented certain new and usefulImprovements in or Relating to the Regulation of Liquid-Fuel Burners, ofwhich the following is a specification.

This invention relates to the regulation of liquid-fuel burners, and hasfor its object to enable the regulation to be effected automatically andalso when desired by hand, thelatterbeing possible without in anywayaffecting the automatic mechanism.

The mechanism forming the subject of this invention is intended chieflyfor use with liquid-fuel burners in which both the size of the flameissuing from the burner and the amount of fuel are simultaneouslyregulated; but the invention is also applicable to other forms ofburners.

According to the present invention the control of the simultaneousmovement is eifected automatically by the pressure of steam in thegenerator heated by the burner, this steam acting upon a piston againstthe pressure of an adjustable spring. Between the piston and its rod andthe burner-regulating mechanism is disposed a direct but yieldingconnection, the arrangement being such that when the pressure of steamforces up the piston against the action of the spring the movement isimparted to the mechanism controlling the burner, and on account of theyielding connection no jamming can occur, and, further, the burner-controlling mechanism may be moved by hand without affecting theautomatic movement of the piston.

In order to enable the burner to be controlled by hand, thehand-operated device is connected to the controlling mechanism and ayielding connection is disposed between the hand-operated device and theautomatic regulator.

The details of the above combined automatic and hand controllingmechanism may be varied in accordance with requirements, and theinvention will be described in its preferred form as applied to a burnerwherein there is employed a needle for controlling the fuel-orifice anda cap which controls the size of the flame, these two parts being movedsimultaneously.

Figure 1 is an elevation, partly in section, of a preferred form ofburner having the present invention applied thereto. Fig. 2 is an endelevation, artly in section, of the same.

A is the yie ding connection between the automatic controlling mechanismB and the burner D, and C is the hand controlling mechanism. a

The burner D has a fuel-chamber D, at one end of which is situated thefuel-inlet nozzle D the opening of the nozzle being controlled by aneedle D to which is attached a spring D At the op osite end of thefuelchamber is disposed t e nozzle D, through which the combustiblemixture issues, the outlet being controlled by a cap D mounted on aspindle D and controlled by a lever D. The fuel is heated by the flameissuing from the nozzle D", the coil D through which the fuel passes tothe nozzle D being situated above the flame-orifice, as shown. The leverD is pivoted at d to a stationary support and has a forked end (2engaging with a collar on the end of the spindle D to which the cap D isattached.

The automatic controlling device B is in the form of a piston-regulator,consisting of a cylinder B, in which is situated a piston B the rod ofwhich is connected to a piece B, having a projection of semisphericalform which rests in a groove or socket in the piston B Beneath thepiston B is attached an elastic or flexible cup B, through which extendsa stud b, and the cup B is retained in position by a nut b on the stud band the washer 12 Between the member B and cross-piece B through whichthe piston-rod .13 passes, is disposed a coil-spring B against which thepressure in the chamber B", which is situated between the cup B and thelower end of the cylinder, has to act to operate the controllingmechanism and vary the flame.

The automatic controlling device B is connected to thenozzle-controlling mechanism and also to the flame-controllingmechanism, so as to simultaneously vary both the supply of fuel to theburner and the quantity of combustible mixture, and therefore the sizeof the flame issuing therefrom.

The piston 13 is acted upon by the steampressure which enters thechamber B by the pipe B The upper end of the rod B passes mec n throughan opening in the cross-piece B, which is connected by links B or otherappropriate mechanism to the lever D and also by suitable connections tothe needle D When pressure of steam forces up the piston against theaction of the spring B, the movement is imparted to the mechanismcontrolling the burner through the cross-piece B and side links 13. thepiston-rod B and the cross-piece B is direct, but yielding, so that nojamming can take place nor the mechanism be strained should the,.steampressure on the pistonbe higher than is necessary to close the fuel andflame openings, V This yielding connection is oflimetalfand in the formshown comprises two springs A A one end of each of which bearssagainst asleeve B having a central enlargement between which and the ends of thesprings are disposed collars A A The opposite ends of the springs bear,respectively, againstthe collars or nuts A A on the pistonrod, andthesenuts also hold the, sleeve B in position and cause it to move withthepiston rod. The enlargement on the sleeve B lies lwithin an openingor eyein thecrosspiece B so that when the piston-rod rises or. falls itcarries with it the cross-piece B,

which, as above stated, is connected with the links B 2, attached tothe. burner-controlling lyVhen steam entersthe cylinder of theregulatorbelow the piston, the rod B is forced upward, causing ,the-nutA thereon to compressthe, spring A against the. washer A I which bearingon the bridge-piece B raises this and causes the links B to act on the,

burner 7 controlled mechanism. Similarly, whenthe pressure is withdrawnthe pistonroddescends under the action of the spring B7, causingthe nutA on the rod B to compress, the spring A against the nut A forcing thebridge-piece 13 down and again causing the links to act on the burnercontrolled mechanism. The same operation takes place when the lever O"is operated by hand.

order to enable the burner to be con-- trolled hand suitable handcontrolling mechanism is attached to the side links B This hand.controlling .meohanism C- comprises conveniently a lever C, pivoted .atc to a notched quadrantIP, over which it can move andwith which aspringor drop catch c oii the lever, o eng e At its lower end the leyerC has acrank C to which is pivoted one end ofa link C the other end ofwhich is pivoted to an extension of the links .B.,

which turn are connected at their upper endsby a bar-B I ,The yieldingconnection between the side links and the piston of the regulator allowsthe.hand.,controllingmechanism to be operated independently of theautomaticcon The connection between thus insure their being order at alltimes. The hand-operatedmech:

trolling mechanism, as it is only necessary when it is desired to raiseor lower the flame of the automatic controlling mechanismia It is alsopossible by means ofthehand control to move the needle and cap.oftheburner and" free. and inworking' anismcan be disconnectedto permitthe. au-."

tomatic regulator to act freely by disengaging the catch-C from thequadrant 0 .1

The hand-operated lever Cwhen free to move with the handsoperatedregulator: maybe employed as an indicator, since by placing.

marks on the quadrant the position of-the.

also the steam-pressure in the cylinder B.

. As above stated, the constructional details may be varied, theprincipal features being the fact that the two methods of controlling;the burnerwhile capable of separate opera-e.

tion will yet work jointly, andoneisan indi-v cation of the movements ofthe other.

What I claimas my-.invention,-.and desire to secure by Letters Patent,is?v I 1. In mechanism for controlling a fuel burner the combinationwithmechanism needle D and cap D may be. ascertained Land for-varying,the flame by controllingthe sup.-.

ply of fuel to the burner and altering-the di mensions of the,burner-outlet, of. a hand-op-: erated devicedirectly; connected to thecone trol mechanism, a piston-regulator i operated by the pressure ofsteam in thegeneraton heated by the burner, and a yieldingconnece.tionbetween the piston-regulator and .the

burner-control mechanism. s

2. In mechanism for controlling a fuel burner, the combination withmechan ism for varying the flame by controlling the" supply of fueltothe burner and altering -the-.

dimensions'of the burner-outlet, of a handoperateddevice directly:connected to the control mechanism, a. piston-regulator opera atedbheated in the hand control device, and.a lockfonthe hand control device.I I 1 l; .11..

3. In mechanism for controlling a li uidfuel .burner, the combinationsupply of fuel to the burner and altering the the pressureof steaminthegenerator by. the burner, a yielding. connection I between thepiston-regulator and some point IIS dimensions .of the burner-outlet,-of an auto-; 1

matically-operated pistonsregulator, a handwith ,mec anism for varyingthe flame by controllingthe springs.

In testimony whereof I have signed my name to this specification in thepresence of 10 two subscribing witnesses.

THOMAS OLARKSON.

V Witnesses:

W. M. HARRIS, WALTER J. SKERTEN.

